@ARTICLE{randall:aco,
	AUTHOR = "M. Randall and A. Lewis",
	TITLE = "A Parallel Implementation of Ant Colony Optimization",
	JOURNAL = {Journal of Parallel and Distributed Computing 62},
	PAGES = {1421 -- 1432},
	YEAR = {2002}}
	
@ARTICLE{tsplib,
	AUTHOR = "G. Reinelt",
	TITLE = "TSPLIBA traveling salesman problem library",
	JOURNAL = {ORSA J. Comput. 3},
	PAGES = {376 -- 348},
	YEAR = {1991}}
	
